普通U形薄壳渡槽底部槽身内壁拉应力过大 ,渡槽的抗裂防渗难于满足。而且一般需要设横向拉杆 ,给特大型渡槽设计带来不便。为此 ,提出一种不设横向联系杆的半椭圆形薄壳渡槽结构 ,其槽身拉应力可人为调节 ,可供有关工程设计参考。 Ordinary U-shaped shell aqueduct at the bottom of the groove wall tensile stress is too large, aqueduct impermeable impermeable to meet. And generally need to set the horizontal rod, to large-scale aqueduct design inconvenience. For this reason, a semi-elliptical thin-shell aqueduct structure without transverse tie bar is proposed, whose tensile stress of the body can be artificially adjusted for reference of engineering design.